#ifndef NUMMETHS_H
#define NUMMETHS_H

int interpol(const double *x, const double *fx, int n, double *z, double *pz,
             int m);

void lsqe(const double *x, const double *y, int n, double *b1, double *b0);

int root(double (*f)(double x), double (*g)(double x), double *x, int *n,
         double delta);

#endif
